There are three switches in a 3 gang box, do I need the 12/3 wire: Electrical Question about Wiring 3-Way Switches.
I am installing a new wall oven with 4-wire cord that I will connect to the house 4-wire cord. Identifying the Wires for a 4-Wire Wall Oven.
How to Safely Install Home Electrical Wiring for Outlets and Receptacles: The method of installing electrical wiring is first and foremost done according to the applicable electrical codes for your location, then it is up to you which method you wish to use. One junction box may be used as a central splice point as long as the box is the right type and size and is is accessible.
Is there a Problem in the Electric Breaker Box? Common problems that cause lost power to home light fixtures and outlets.